Water Filters

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Water filters, starting with your water. City water: read your utility's yearly quality report. Private well: nobody tests it for you, so test at least yearly for bacteria and nitrate, and for lead, arsenic or PFAS if they are found nearby. Then pick a filter certified (NSF/ANSI or WQA) for the exact contaminant you need removed; look up the model, not just the brand. Change cartridges on schedule. Off-grid and in emergencies, boil or disinfect water, or use a filter rated for bacteria and protozoa. Brands and stores below are commercial.

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Links last checked Oct 19, 2026.

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Know your water first (start here)
cdc.gov - CDC: well water safety whois history safety search AI Mode Grok Bing AI
cdc.gov (drinking water) - CDC: drinking water whois history safety search AI Mode Grok Bing AI
epa.gov - EPA: drinking water basics whois history safety search AI Mode Grok Bing AI
epa.gov (CCR) - EPA: read your water utility's yearly quality report whois history safety search AI Mode Grok Bing AI
epa.gov (emergency) - EPA: boil or disinfect water in an emergency whois history safety search AI Mode Grok Bing AI
epa.gov (lead) - EPA: lead in drinking water whois history safety search AI Mode Grok Bing AI
epa.gov (PFAS) - EPA PFAS drinking water rule (2024) and 2025-26 proposed changes whois history safety search AI Mode Grok Bing AI
epa.gov (state wells) - EPA: well programs and testing help in your state whois history safety search AI Mode Grok Bing AI
epa.gov (wells) - EPA private wells: you are responsible for testing your well whois history safety search AI Mode Grok Bing AI
ngwa.org - National Ground Water Association whois history safety search AI Mode Grok Bing AI
sdwis.epa.gov - EPA: find your local water quality report (CCR) whois history safety search AI Mode Grok Bing AI
wellowner.org - Water Systems Council: well owner help (may block automated checks) whois history safety search AI Mode Grok Bing AI
Find a certified filter
find.wqa.org - WQA Gold Seal certified product search whois history safety search AI Mode Grok Bing AI
iapmort.org - IAPMO R&T: certified filter listings whois history safety search AI Mode Grok Bing AI
info.nsf.org - NSF/ANSI certified filter search: check the exact model whois history safety search AI Mode Grok Bing AI
mytapscore.com - Tap Score: lab water test kits whois history safety search AI Mode Grok Bing AI
wqa.org - Water Quality Association: find a certified water pro whois history safety search AI Mode Grok Bing AI
Home and whole-house filters (commercial)
apecwater.com - APEC reverse osmosis (freedrinkingwater.com on the old page) whois history safety search AI Mode Grok Bing AI
aquasana.com - Aquasana (on the old page) whois history safety search AI Mode Grok Bing AI
brita.com - Brita (filterforgood.com on the old page) (on the old page) whois history safety search AI Mode Grok Bing AI
culligan.com - Culligan whois history safety search AI Mode Grok Bing AI
ispring.com - iSpring whois history safety search AI Mode Grok Bing AI
kinetico.com - Kinetico (on the old page) whois history safety search AI Mode Grok Bing AI
pentair.com - Pentair and Everpure whois history safety search AI Mode Grok Bing AI
pur.com - PUR whois history safety search AI Mode Grok Bing AI
purewaterfreedom.com - Pure Water Freedom (on the old page) whois history safety search AI Mode Grok Bing AI
raindancewatersystems.com - RainDance Water Systems (on the old page) whois history safety search AI Mode Grok Bing AI
theperfectwater.com - Home Master (advancedwaterfilters.com on the old page) whois history safety search AI Mode Grok Bing AI
waterdropfilter.com - Waterdrop whois history safety search AI Mode Grok Bing AI
zerowater.com - ZeroWater whois history safety search AI Mode Grok Bing AI
Off-grid, camping and emergency filters (commercial)
cascadedesigns.com - MSR: backcountry filters and purifiers whois history safety search AI Mode Grok Bing AI
katadyn.com - Katadyn (on the old page) whois history safety search AI Mode Grok Bing AI
lifestraw.com - LifeStraw whois history safety search AI Mode Grok Bing AI
sawyer.com - Sawyer: squeeze and gravity filters whois history safety search AI Mode Grok Bing AI
Filter stores and test gear (commercial)
amazon.com - Amazon: NSF-certified water filters (on the old page) whois history safety search AI Mode Grok Bing AI
bigbrandwater.com - Big Brand Water Filter (on the old page) whois history safety search AI Mode Grok Bing AI
discountfilterstore.com - Discount Filter Store (on the old page) whois history safety search AI Mode Grok Bing AI
filtersfast.com - Filters Fast (may block automated checks) (on the old page) whois history safety search AI Mode Grok Bing AI
fridgefilters.com - FridgeFilters (on the old page) whois history safety search AI Mode Grok Bing AI
hannainst.com - Hanna Instruments: water test meters (on the old page) whois history safety search AI Mode Grok Bing AI
homedepot.com - The Home Depot whois history safety search AI Mode Grok Bing AI


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